It was reported in the US first that actress and A-lister Sienna Miller, 30, gave birth to her first baby - a girl - with fiance, 26 year-old actor, Tom Sturridge, in a London hospital over the weekend.
Sienna's sister, the fashion designer Savannah Miller, tweeted 'Marlowe I love you..... ', which has been taken as a name check for her new niece.
What do you think of the name? We quite like it!
We'll keep you informed on any further developments.